#include <fstream>
using namespace std;
ifstream fin ("piese.in");
ofstream fout ("piese.out");
int n,m,i,j,a[501][501],x,nr,p,ii,jj;
int main ()
{

    fin>>n>>m;
    nr=0;
    for(i=n;i>=1;i--)
        for(j=m;j>=1;j--)
            if(a[i][j]==0)
            {
                nr++;
                x=min(i,j);
                p=1;
                for(ii=1;p<=x;ii++)
                    if(p*2<=x)
                        p*=2;
                    else
                        break;
                for(ii=i;ii>=i-p+1;ii--)
                    for(jj=j;jj>=j-p+1;jj--)
                        a[ii][jj]=nr;
            }
    fout<<nr<<"\n";
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=m;j++)
            fout<<a[i][j]<<" ";
        fout<<"\n";
    }
    return 0;
}